int camera_get_frame(struct picture_t *pic)
{
struct v4l2_buffer cam_buf = {0};
cam_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cam_buf.memory = V4L2_MEMORY_MMAP;
if(ioctl(fd_cam, VIDIOC_DQBUF, &cam_buf) < 0) {
perror("VIDIOC_DQBUF");
return 0;
}
applog("buf_index=%02d, seq=%d, timestamp=%d%06d",
cam_buf.index, cam_buf.sequence, (int)cam_buf.timestamp.tv_sec, (int)cam_buf.timestamp.tv_usec);
if(v4lconvert_convert(lib, &src_fmt, &dst_fmt, (void*)buf_pointer[cam_buf.index],
cam_buf.length, current_pic.buffer, YUV420_size) <= 0){
perror("v4lconvert_convert");
return 0;
}
current_pic.timestamp = cam_buf.timestamp;
cam_buf.flags = cam_buf.reserved = 0;
if(ioctl(fd_cam, VIDIOC_QBUF, &cam_buf) < 0) {
perror("VIDIOC_QBUF");
return 0;
}
*pic = current_pic;
return 1;
}
static void process_image(unsigned char *p, int len)
{
if (grab) {
FILE *f;
f = fopen("image.dat", "w");
fwrite(p, 1, len, f);
fclose(f);
printf("image dumped to 'image.dat'\n");
exit(EXIT_SUCCESS);
}
#ifdef WITH_V4L2_LIB
if (v4lconvert_convert(v4lconvert_data,
&src_fmt,
&fmt,
p, len,
dst_buf, fmt.fmt.pix.sizeimage) < 0) {
if (errno != EAGAIN)
errno_exit("v4l_convert");
return;
}
p = dst_buf;
len = fmt.fmt.pix.sizeimage;
#endif
#ifdef WITH_GTK
gdk_draw_rgb_image(drawing_area->window,
drawing_area->style->white_gc,
0, 0, /* xpos, ypos */
fmt.fmt.pix.width, fmt.fmt.pix.height,
// GDK_RGB_DITHER_MAX,
GDK_RGB_DITHER_NORMAL,
p,
fmt.fmt.pix.width * 3);
#else
fputc('.', stdout);
#endif
if (info && io != V4L2_MEMORY_MMAP) {
if (--info <= 0) {
__time_t sec;
long int usec;
int d1, d2;
sec = cur_time.tv_sec;
usec = cur_time.tv_usec;
gettimeofday(&cur_time, 0);
d1 = cur_time.tv_sec - sec;
d2 = cur_time.tv_usec - usec;
while (d2 < 0) {
d2 += 1000000;
d1--;
}
printf("FPS: %5.2fd\n",
(float) NFRAMES / (d1 + 0.000001 * d2));
info = NFRAMES;
}
}
}
static int tc_v4l2_fetch_data_v4lconv(V4L2Source *vs,
uint8_t *src, int src_len,
uint8_t *dst, int dst_len)
{
int err = v4lconvert_convert(vs->v4l_convert,
&(vs->v4l_src_fmt),
&(vs->v4l_dst_fmt),
src, src_len, dst, dst_len);
return (err == -1) ?TC_ERROR :TC_OK; /* FIXME */
}
// FIXME return 0;-1 and set errno
int video_read(struct video_t *vid, void *buffer) {
int r;
// FIXME not necessary in case of io_watch
/* fd_set fds;
struct timeval tv;
FD_ZERO(&fds);
FD_SET(vid->fd, &fds);
// Timeout.
tv.tv_sec = 1;
tv.tv_usec = 0;
r = select(vid->fd + 1, &fds, NULL, NULL, &tv);
if(r<0) {
fprintf(stderr, "select error\n");
exit(EXIT_FAILURE);
}
if(!r) {
fprintf(stderr, "select timeout\n");
exit(EXIT_FAILURE);
}*/
// end of FIXME
// get raw image data
r = read(vid->fd, vid->raw_buffer, vid->src_fmt.fmt.pix.sizeimage);
if(r<0) {
switch(errno) {
case EAGAIN:
return 0;
case EIO:
/* Could ignore EIO, see spec. */
/* fall through */
default:
fprintf(stderr, "read error\n");
exit(EXIT_FAILURE);
}
}
// convert data to desired format
if (v4lconvert_convert(vid->convert_data, &vid->src_fmt, &vid->vid_fmt,
vid->raw_buffer, vid->src_fmt.fmt.pix.sizeimage, // raw data
buffer, vid->vid_fmt.fmt.pix.sizeimage // converted data
) < 0) {
if (errno != EAGAIN)
exit(1); // FIXME errno_exit("v4l_convert");
return 1;
}
return 0;
}
//
// v4l2 version (!)
//
void gv4l2_process_image (CWEBCAM * _object, void *start)
{
struct v4l2_format dest = THIS->fmt;
if (THIS->format != GB_IMAGE_BGR)
gv4l2_debug("Destination format not supported");
dest.fmt.pix.pixelformat = V4L2_PIX_FMT_BGR24;
dest.fmt.pix.sizeimage = THIS->fmt.fmt.pix.width * THIS->fmt.fmt.pix.height * 3;
if (v4lconvert_convert(THIS->convert, &THIS->fmt, &dest, start, THIS->fmt.fmt.pix.sizeimage, THIS->frame, dest.fmt.pix.sizeimage) != dest.fmt.pix.sizeimage)
gv4l2_debug("Unable to convert webcam image to BGR24");
}
void process_image(unsigned char *p, int len, int W, int H)
{
if(v4lconvert_convert(v4lconvert_data,
&src_fmt,
&fmt,
p, len,
dst_buf,
fmt.fmt.pix.sizeimage) < 0)
{
if(errno != EAGAIN)
{
perror("v4l_convert");
}
p = dst_buf;
len = fmt.fmt.pix.sizeimage;
}
}
int V4LCamera::exec() {
char header [50];
sprintf(header,"P6\n%d %d 255\n",_fmt.fmt.pix.width,_fmt.fmt.pix.height);
unsigned char *dst_buf;
#ifdef _DEBUG_CAPTURE_THREADS
qDebug() << "[CAMERA_THREAD::V4L_CAMERA] - exec() - Started";
#endif //_DEBUG_CAPTURE_THREADS
while(true){
myTimer.start();
do {
FD_ZERO(&_fds);
FD_SET(_fd, &_fds);
_r = select(_fd + 1, &_fds, NULL, NULL, &_tv);
} while ((_r == -1 && (errno = EINTR)));
if (_r == -1)
qFatal("[CAMERA_THREAD::V4L_CAMERA] - exec() - select() returns error!");
CLEAR(_buf);
_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
_buf.memory = V4L2_MEMORY_MMAP;
V4LSettings::qioctl(_fd, VIDIOC_DQBUF, &_buf, "V4LCamera::exec()");
dst_buf = (unsigned char*)malloc(_fmt.fmt.pix.sizeimage);
if (v4lconvert_convert(_v4lconvert_data, &_src_fmt, &_fmt,
(unsigned char*)_buffers[_buf.index].start, _buf.bytesused,
dst_buf, _fmt.fmt.pix.sizeimage) < 0) {
#ifdef _DEBUG_CAPTURE_THREADS
if (errno != EAGAIN)
qWarning("[CAMERA_THREAD::V4L_CAMERA] - exec() - v4l_convert() returns error");
#endif //_DEBUG_CAPTURE_THREADS
}
unsigned char* asil=(unsigned char*)malloc(_fmt.fmt.pix.sizeimage+qstrlen(header));
memmove(asil, dst_buf, _fmt.fmt.pix.sizeimage);
memmove(asil+qstrlen(header), asil, _fmt.fmt.pix.sizeimage);
memcpy(asil,header,qstrlen(header));
Mat *qq = new Mat(_fmt.fmt.pix.height, _fmt.fmt.pix.width, CV_8UC2, asil);
if(!qq->empty()) {
Mat newFrame = qq->clone();
switch(_fmt.fmt.pix.height) {
case 720:
case 800:
case 960:
cvtColor(newFrame, newFrame, CV_YUV2RGB_YUYV);
break;
case 1024:
cvtColor(newFrame, newFrame, CV_YUV2BGR_Y422);
break;
default:
cvtColor(newFrame, newFrame, CV_YUV2RGB_Y422);
break;
}
_cvMatbuffer.enqueue(newFrame);
emit availableFrame();
}
free(asil);
free(dst_buf);
delete qq;
V4LSettings::qioctl(_fd, VIDIOC_QBUF, &_buf, "V4LCamera::exec()");
_fps = 1000.0/myTimer.elapsed();
}
return 0;
}
void capture()
{
unsigned char *yuv420_buf;
int yuv420_size = fmt.fmt.pix.width*fmt.fmt.pix.height*3/2;
int src_size, i, j, k, nframe;
struct v4lconvert_data *lib;
buffersize = calc_size(fmt.fmt.pix.sizeimage);
buf_alloc_mmap();
lib = v4lconvert_create(fd_cam);
if(!lib) {
perror("v4lconvert_create");
exit(1);
}
yuv420_buf = malloc(yuv420_size);
if(!yuv420_buf){
perror("malloc");
exit(1);
}
if(ioctl(fd_cam, VIDIOC_STREAMON, &reqbuf.type) < 0) {
perror("VIDIOC_STREAMON");
exit(1);
}
dst_fmt = fmt;
dst_fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
if(!v4lconvert_supported_dst_format(dst_fmt.fmt.pix.pixelformat)){
puts("v4lconvert_supported_dst_format");
exit(1);
}
for(errno = 0, nframe = 0; nframe < NUM_FRAME; nframe++) {
struct v4l2_buffer cam_buf = {0};
cam_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cam_buf.memory = reqbuf.memory;
if(ioctl(fd_cam, VIDIOC_DQBUF, &cam_buf) < 0) {
perror("VIDIOC_DQBUF");
exit(1);
}
printf("DQBUF: index=%d, seq=%d, time=%d.%06d\n", cam_buf.index, cam_buf.sequence, cam_buf.timestamp.tv_sec, cam_buf.timestamp.tv_usec);
src_size = cam_buf.length;
if(v4lconvert_convert(lib, &fmt, &dst_fmt, (void*)buf_pointer[cam_buf.index], src_size, yuv420_buf, yuv420_size) <= 0){
perror("v4lconvert_convert");
exit(1);
}
cam_buf.length = buffersize;
if(ioctl(fd_cam, VIDIOC_QBUF, &cam_buf) < 0) {
perror("VIDIOC_QBUF");
exit(1);
}
write(fd_out, yuv420_buf, yuv420_size);
}
if(ioctl(fd_cam, VIDIOC_STREAMOFF, &reqbuf.type) < 0) {
perror("VIDIOC_STREAMOFF");
exit(1);
}
free(yuv420_buf);
v4lconvert_destroy(lib);
free_buf_mmap();
}
// process video data
void CaptureThread::run() {
while (devam) {
mutex.lock();
do {
FD_ZERO(&fds);
FD_SET(fd, &fds);
/* Timeout. */
tv.tv_sec = 2;
tv.tv_usec = 0;
r = select(fd + 1, &fds, NULL, NULL, &tv);
} while ((r == -1 && (errno = EINTR)));
if (r == -1) {
kDebug() << "select";
quit();
return;
}
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
xioctl(fd, VIDIOC_DQBUF, &buf);
if (v4lconvert_convert(v4lconvert_data,
&src_fmt,
&fmt,
(unsigned char*)buffers[buf.index].start, buf.bytesused,
dst_buf, fmt.fmt.pix.sizeimage) < 0) {
if (errno != EAGAIN)
kDebug() << "v4l_convert";
}
unsigned char* asil=(unsigned char*)malloc(fmt.fmt.pix.sizeimage+qstrlen(header));
memmove(asil, dst_buf, fmt.fmt.pix.sizeimage);
memmove(asil+qstrlen(header), asil, fmt.fmt.pix.sizeimage);
memcpy(asil,header,qstrlen(header));
QImage *qq=new QImage();
if(qq->loadFromData(asil,fmt.fmt.pix.sizeimage+qstrlen(header), "PPM")){
QTransform outTransform;
if(Settings::mirror()){
// scaling x * -1 - making the output image mirror.
outTransform.scale(-1, 1);
}
if(Settings::flip()){
// flipping y * -1
outTransform.scale(1, -1);
}
emit renderedImage(qq->transformed(outTransform));
}
free(asil);
delete qq;
if (delay>0) {
this->msleep(delay);
}
xioctl(fd, VIDIOC_QBUF, &buf);
di++;
mutex.unlock();
}
}
void CaptureThread::run(){
//do real stuff
fd = -1;
dev_name = "/dev/video0";
fd = v4l2_open(dev_name, O_RDWR | O_NONBLOCK, 0);
if (fd < 0) {
qDebug("Cannot open device");
//exit(EXIT_FAILURE);
return;
}
static struct v4lconvert_data *v4lconvert_data;
static struct v4l2_format src_fmt;
static unsigned char *dst_buf;
CLEAR(fmt);
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.width = 640;
fmt.fmt.pix.height = 480;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB24;
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
xioctl(fd, VIDIOC_S_FMT, &fmt);
if (fmt.fmt.pix.pixelformat != V4L2_PIX_FMT_RGB24) {
printf("Libv4l didn't accept RGB24 format. Can't proceed.\n");
//exit(EXIT_FAILURE);
return;
}
if ((fmt.fmt.pix.width != 640) || (fmt.fmt.pix.height != 480))
printf("Warning: driver is sending image at %dx%d\n",
fmt.fmt.pix.width, fmt.fmt.pix.height);
v4lconvert_data = v4lconvert_create(fd);
if (v4lconvert_data == NULL)
qDebug("v4lconvert_create");
if (v4lconvert_try_format(v4lconvert_data, &fmt, &src_fmt) != 0)
qDebug("v4lconvert_try_format");
xioctl(fd, VIDIOC_S_FMT, &src_fmt);
dst_buf = (unsigned char*)malloc(fmt.fmt.pix.sizeimage);
CLEAR(req);
req.count = 2;
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_MMAP;
xioctl(fd, VIDIOC_REQBUFS, &req);
buffers = (buffer*)calloc(req.count, sizeof(*buffers));
for (n_buffers = 0; n_buffers < req.count; ++n_buffers) {
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = n_buffers;
xioctl(fd, VIDIOC_QUERYBUF, &buf);
buffers[n_buffers].length = buf.length;
buffers[n_buffers].start = v4l2_mmap(NULL, buf.length,
PROT_READ | PROT_WRITE, MAP_SHARED,
fd, buf.m.offset);
if (MAP_FAILED == buffers[n_buffers].start) {
qDebug("mmap");
//exit(EXIT_FAILURE);
return;
}
}
for (int i = 0; i < n_buffers; ++i) {
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
xioctl(fd, VIDIOC_QBUF, &buf);
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
xioctl(fd, VIDIOC_STREAMON, &type);
int di=0;
char header[]="P6\n640 480 255\n";
while(devam){
/* bu döngü datanın birikmesini sağlıyor */
do {
FD_ZERO(&fds);
FD_SET(fd, &fds);
/* Timeout. */
tv.tv_sec = 2;
tv.tv_usec = 0;
r = select(fd + 1, &fds, NULL, NULL, &tv);
} while ((r == -1 && (errno = EINTR)));
if (r == -1) {
qDebug("select");
//exit(1) ;
return;
}
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
xioctl(fd, VIDIOC_DQBUF, &buf);
try{
if (v4lconvert_convert(v4lconvert_data,
&src_fmt,
&fmt,
(unsigned char*)buffers[buf.index].start, buf.bytesused,
dst_buf, fmt.fmt.pix.sizeimage) < 0) {
if (errno != EAGAIN)
qDebug("v4l_convert");
}
unsigned char* asil=(unsigned char*)malloc(fmt.fmt.pix.sizeimage+qstrlen(header));
memmove(asil, dst_buf, fmt.fmt.pix.sizeimage);
memmove(asil+qstrlen(header), asil, fmt.fmt.pix.sizeimage);
memcpy(asil,header,qstrlen(header));
QImage qq;//=new QImage(dst_buf,640,480,QImage::Format_RGB32);
if(qq.loadFromData(asil,fmt.fmt.pix.sizeimage+qstrlen(header),"PPM")){
if(parent->isVisible()){
QImage q1(qq);
parent->img=q1;
parent->update();
//this->msleep(50);
}
//qApp->processEvents();
if(asil)
free(asil);
}
}catch(...){}
xioctl(fd, VIDIOC_QBUF, &buf);
di++;
}
try{
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
xioctl(fd, VIDIOC_STREAMOFF, &type);
for (int i = 0; i < n_buffers; ++i)
v4l2_munmap(buffers[i].start, buffers[i].length);
v4l2_close(fd);
}catch(...){}
}
static int v4l2_read_and_convert(int index, unsigned char *dest, int dest_size)
{
const int max_tries = 10;
int result, buf_size, tries = max_tries;
buf_size = devices[index].dest_fmt.fmt.pix.sizeimage;
if (devices[index].readbuf_size < buf_size) {
unsigned char *new_buf;
new_buf = realloc(devices[index].readbuf, buf_size);
if (!new_buf)
return -1;
devices[index].readbuf = new_buf;
devices[index].readbuf_size = buf_size;
}
do {
result = SYS_READ(devices[index].fd, devices[index].readbuf, buf_size);
if (result <= 0) {
if (result && errno != EAGAIN) {
int saved_err = errno;
V4L2_LOG_ERR("reading: %s\n", strerror(errno));
errno = saved_err;
}
return result;
}
result = v4lconvert_convert(devices[index].convert,
&devices[index].src_fmt, &devices[index].dest_fmt,
devices[index].readbuf, result, dest, dest_size);
if (devices[index].first_frame) {
/* Always treat convert errors as EAGAIN during the first few frames, as
some cams produce bad frames at the start of the stream
(hsync and vsync still syncing ??). */
if (result < 0)
errno = EAGAIN;
devices[index].first_frame--;
}
if (result < 0) {
int saved_err = errno;
if (errno == EAGAIN)
V4L2_LOG("warning error while converting frame data: %s",
v4lconvert_get_error_message(devices[index].convert));
else
V4L2_LOG_ERR("converting / decoding frame data: %s",
v4lconvert_get_error_message(devices[index].convert));
errno = saved_err;
}
tries--;
} while (result < 0 && errno == EAGAIN && tries);
if (result < 0 && errno == EAGAIN) {
V4L2_LOG_ERR("got %d consecutive frame decode errors, last error: %s",
max_tries, v4lconvert_get_error_message(devices[index].convert));
}
return result;
}
static int v4l2_dequeue_and_convert(int index, struct v4l2_buffer *buf,
unsigned char *dest, int dest_size)
{
const int max_tries = 10;
int result, tries = max_tries;
/* Make sure we have the real v4l2 buffers mapped */
result = v4l2_map_buffers(index);
if (result)
return result;
do {
result = SYS_IOCTL(devices[index].fd, VIDIOC_DQBUF, buf);
if (result) {
if (errno != EAGAIN) {
int saved_err = errno;
V4L2_LOG_ERR("dequeuing buf: %s\n", strerror(errno));
errno = saved_err;
}
return result;
}
devices[index].frame_queued &= ~(1 << buf->index);
result = v4lconvert_convert(devices[index].convert,
&devices[index].src_fmt, &devices[index].dest_fmt,
devices[index].frame_pointers[buf->index],
buf->bytesused, dest ? dest : (devices[index].convert_mmap_buf +
buf->index * V4L2_FRAME_BUF_SIZE), dest_size);
if (devices[index].first_frame) {
/* Always treat convert errors as EAGAIN during the first few frames, as
some cams produce bad frames at the start of the stream
(hsync and vsync still syncing ??). */
if (result < 0)
errno = EAGAIN;
devices[index].first_frame--;
}
if (result < 0) {
int saved_err = errno;
if (errno == EAGAIN)
V4L2_LOG("warning error while converting frame data: %s",
v4lconvert_get_error_message(devices[index].convert));
else
V4L2_LOG_ERR("converting / decoding frame data: %s",
v4lconvert_get_error_message(devices[index].convert));
v4l2_queue_read_buffer(index, buf->index);
errno = saved_err;
}
tries--;
} while (result < 0 && errno == EAGAIN && tries);
if (result < 0 && errno == EAGAIN) {
V4L2_LOG_ERR("got %d consecutive frame decode errors, last error: %s",
max_tries, v4lconvert_get_error_message(devices[index].convert));
errno = EAGAIN;
}
return result;
}
static struct video_frame * vidcap_v4l2_grab(void *state, struct audio_frame **audio)
{
struct vidcap_v4l2_state *s = (struct vidcap_v4l2_state *) state;
struct video_frame *out;
*audio = NULL;
struct v4l2_buffer buf;
memset(&buf, 0, sizeof(buf));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
if(ioctl(s->fd, VIDIOC_DQBUF, &buf) != 0) {
perror("Unable to dequeue buffer");
return NULL;
};
out = vf_alloc_desc(s->desc);
out->dispose = vidcap_v4l2_dispose_video_frame;
if(!s->conversion_needed) {
struct v4l2_dispose_deq_buffer_data *frame_data =
malloc(sizeof(struct v4l2_dispose_deq_buffer_data));
frame_data->fd = s->fd;
memcpy(&frame_data->buf, &buf, sizeof(buf));
out->tiles[0].data = s->buffers[frame_data->buf.index].start;
out->tiles[0].data_len = frame_data->buf.bytesused;
out->dispose_udata = frame_data;
} else {
out->dispose_udata = NULL;
out->tiles[0].data = (char *) malloc(out->tiles[0].data_len);
int ret = v4lconvert_convert(s->convert,
&s->src_fmt, /* in */
&s->dst_fmt, /* in */
s->buffers[buf.index].start,
buf.bytesused,
(unsigned char *) out->tiles[0].data,
out->tiles[0].data_len);
// we do not need the driver buffer any more
if (ioctl(s->fd, VIDIOC_QBUF, &buf) != 0) {
perror("Unable to enqueue buffer");
};
if(ret == -1) {
fprintf(stderr, "Error converting video.\n");
VIDEO_FRAME_DISPOSE(out);
return NULL;
}
out->tiles[0].data_len = ret;
}
s->frames++;
struct timeval t;
gettimeofday(&t, NULL);
double seconds = tv_diff(t, s->t0);
if (seconds >= 5) {
float fps = s->frames / seconds;
log_msg(LOG_LEVEL_INFO, "[V4L2 capture] %d frames in %g seconds = %g FPS\n", s->frames, seconds, fps);
s->t0 = t;
s->frames = 0;
}
return out;
}
static inline int video_grabframe (opi_video_device_t *dev, int raw, opi_video_frameinfo_t *finfo, int *buffer, int bufsize) /*{{{*/
{
if (dev->fd < 0) {
/* not open */
} else if (dev->api == 1) {
if (dev->use_mmap == 1) {
struct video_mmap vmmap;
int bnum = 0;
int r;
vmmap.frame = 0;
vmmap.width = finfo->width;
vmmap.height = finfo->height;
vmmap.format = convert_pal_opi_to_v4l1 (finfo->format);
while (((r = ioctl (dev->fd, VIDIOCMCAPTURE, &vmmap)) == -1) && (errno == EINTR)); /* retry */
if (r >= 0) {
while (((r = ioctl (dev->fd, VIDIOCSYNC, &bnum)) == -1) && (errno == EINTR)); /* retry */
if (r >= 0) {
if (raw) {
memcpy (buffer, dev->buffers[0].addr, bufsize);
} else {
v4lconvert_convert (
(struct v4lconvert_data *) dev->convert,
&(dev->src), &(dev->dst),
(unsigned char *) dev->buffers[0].addr, dev->buffers[0].size,
(unsigned char *) buffer, bufsize);
rgb24_rgb32 (finfo->width, finfo->height, (unsigned char *) buffer);
}
return 1;
}
}
} else {
/* FIXME! */
}
} else if (dev->api == 2) {
if (dev->use_mmap == 1) {
struct v4l2_buffer buf;
int result = 0;
int r;
memset (&buf, 0, sizeof (buf));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
if (dev->oneshot) {
buf.index = 0;
while (((r = ioctl (dev->fd, VIDIOC_QBUF, &buf)) == -1) && (errno == EINTR)); /* retry */
if (r < 0)
return 0;
while (((r = ioctl (dev->fd, VIDIOC_STREAMON, &(buf.type))) == -1) && (errno == EINTR)); /* retry */
if (r < 0)
return 0;
}
while (((r = ioctl (dev->fd, VIDIOC_DQBUF, &buf)) == -1) && (errno == EINTR)); /* retry */
if (r >= 0) {
int idx = buf.index;
if (raw) {
memcpy (buffer, dev->buffers[idx].addr, bufsize);
} else {
v4lconvert_convert (
(struct v4lconvert_data *) dev->convert,
&(dev->src), &(dev->dst),
(unsigned char *) dev->buffers[idx].addr, dev->buffers[idx].size,
(unsigned char *) buffer, bufsize);
rgb24_rgb32 (finfo->width, finfo->height, (unsigned char *) buffer);
}
if (!dev->oneshot)
while (((r = ioctl (dev->fd, VIDIOC_QBUF, &buf)) == -1) && (errno == EINTR)); /* retry */
result = 1;
}
if (dev->oneshot) {
while (((r = ioctl (dev->fd, VIDIOC_STREAMOFF, &(buf.type))) == -1) && (errno == EINTR)); /* retry */
}
return result;
} else {
/* FIXME! */
}
}
return 0;
}
void Videostreaming::capFrame()
{
__u32 buftype = m_buftype;
v4l2_plane planes[VIDEO_MAX_PLANES];
v4l2_buffer buf;
unsigned char *tempSrcBuffer = NULL, *tempDestBuffer = NULL, *copyDestBuffer = NULL;
unsigned char *tempCu130DestBuffer = NULL, *tempCu130SrcBuffer = NULL;
unsigned char *tempCu40DestBuffer = NULL, *irBuffer = NULL;
unsigned char *tempLogtechSrcBuffer = NULL, *tempLogtechDestBuffer = NULL;
unsigned char *displaybuf = NULL;
unsigned short int *tempCu40SrcBuffer = NULL;
//Modified by Nithyesh
//Previously it was int err = 0, x, y;
int err = 0;
__u32 x, y;
bool again, v4l2convert = false;
memset(planes, 0, sizeof(planes));
buf.length = VIDEO_MAX_PLANES;
buf.m.planes = planes;
if (!dqbuf_mmap(buf, buftype, again)) {
closeDevice();
unsigned char *m_data=NULL;
QImage tempImage(m_data,320,240,QImage::Format_RGB888);
qImage = QPixmap::fromImage(tempImage);
update();
emit deviceUnplugged("Disconnected","Device Not Found");
emit logCriticalHandle("Device disconnected");
return;
}
if (again) {
return;
}
if (buf.flags & V4L2_BUF_FLAG_ERROR) {
qbuf(buf);
return;
}
#if 0
switch(m_capSrcFormat.fmt.pix.pixelformat) {
case V4L2_PIX_FMT_YUYV: {
if((width*height*2) == buf.bytesused){
validFrame = true;
}
}
break;
case V4L2_PIX_FMT_SGRBG8:{
// if bayer - 8 bit camera
// {
if ((width*height) == buf.bytesused)
validFrame = true;
// }
// if bayer - 8 bit + pad camera
// {
if ((width*height*2) == buf.bytesused)
validFrame = true;
// }
}
break;
case V4L2_PIX_FMT_MJPEG:{
validFrame = true;
break;
}
default:
// To do: for other color spaces
break;
}
if (validFrame != true){
qbuf(buf);
qDebug()<<"validFrame != true";
// return;
}
#endif
if (camDeviceName == "e-con's CX3 RDK with M\nT9P031" || camDeviceName == "See3CAM_12CUNIR" || camDeviceName == "See3CAM_CU51")
{
tempSrcBuffer = (unsigned char *)malloc(width * height * 2);
tempDestBuffer = (unsigned char *)malloc(width * height << 1);
copyDestBuffer = tempDestBuffer;
memcpy(tempSrcBuffer, m_buffers[buf.index].start[0], buf.bytesused);
for(__u32 l=0; l<(width*height*2); l=l+2) /* Y16 to YUYV conversion */
{
*tempDestBuffer++ = (((tempSrcBuffer[l] & 0xF0) >> 4) | (tempSrcBuffer[l+1] & 0x0F) << 4);
*tempDestBuffer++ = 0x80;
}
m_capSrcFormat.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
err = v4lconvert_convert(m_convertData, &m_capSrcFormat, &m_capDestFormat,
(unsigned char *)copyDestBuffer, buf.bytesused,
m_capImage->bits(), m_capDestFormat.fmt.pix.sizeimage);
v4l2convert = true;
}else if (camDeviceName == "See3CAM_CU40") {